A rumor has been going around for about four months now that Valve is coming out with a Linux version of Steam and had a lot of people in the Linux community very excited. However Valve have officially killed the rumor. And it is not what people wants to hear - there is no Linux version of Steam in development.

Loki went bankrupt because their business model failed. Their ports did not have technical problems. However, they had to do a lot of work from which people still profit today: Namely the libSDL.

I talked about iD as they continued to provide their state-of-the-art games for linux after the demise of Loki. With the one developer I mentioned.

Look at the outstanding performance of Doom 3 in Linux, and how it smoothly runs everywhere. See what can be achieved: without much hassle, as iD hat stated before it wouldn't see it worthy to get through much hassle. They only announced the linux version when they already had seen that it can be done with very reasonable efforts.